please share what your docker compose settings are for API_HOST and APP_ORIGIN

version: "3" services: mongo: image: "mongo:latest" environment: - MONGO_INITDB_ROOT_USERNAME=root - MONGO_INITDB_ROOT_PASSWORD=password growthbook: image: "growthbook/growthbook:latest" ports: - "3000:3000" - "3100:3100" depends_on: - mongo environment: - MONGODB_URI=mongodb://root:password@mongo:27017/growthbook?authSource=admin - APP_ORIGIN=http://localhost:3000 - API_HOST=http://44.228.128.51:3100 volumes: - uploads:/usr/local/src/app/packages/back-end/uploads volumes: uploads:

the APP_ORIGIN is used for the CORS header - so that must match what the host of the APP is. The API_HOST is used as the routable address for the API from the APP.